AU1254400A - Method for diagnosing insulation degradation in underground cable - Google Patents

Method for diagnosing insulation degradation in underground cable

Info

Publication number
AU1254400A
AU1254400A AU12544/00A AU1254400A AU1254400A AU 1254400 A AU1254400 A AU 1254400A AU 12544/00 A AU12544/00 A AU 12544/00A AU 1254400 A AU1254400 A AU 1254400A AU 1254400 A AU1254400 A AU 1254400A
Authority
AU
Australia
Prior art keywords
current
insulation degradation
underground cable
current flow
diagnosing insulation
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
AU12544/00A
Inventor
Harry E. Orton
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of AU1254400A publication Critical patent/AU1254400A/en
Abandoned legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R23/00—Arrangements for measuring frequencies; Arrangements for analysing frequency spectra
    • G01R23/16—Spectrum analysis; Fourier analysis
    • G01R23/20—Measurement of non-linear distortion
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
    • G01R31/1227—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials
    • G01R31/1263—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials of solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation
    • G01R31/1272—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials of solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation of cable, line or wire insulation, e.g. using partial discharge measurements
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R15/00—Details of measuring arrangements of the types provided for in groups G01R17/00 - G01R29/00, G01R33/00 - G01R33/26 or G01R35/00
    • G01R15/14—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks
    • G01R15/24—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using light-modulating devices
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/08—Locating faults in cables, transmission lines, or networks
    • G01R31/081—Locating faults in cables, transmission lines, or networks according to type of conductors
    • G01R31/083—Locating faults in cables, transmission lines, or networks according to type of conductors in cables, e.g. underground
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
    • G01R31/58—Testing of lines, cables or conductors

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Mathematical Physics (AREA)
  • Testing Relating To Insulation (AREA)
  • Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)

Abstract

The invention provides a method of on-line diagnosis of insulation degradation in a portion of underground cable including measuring the current flow at first and second locations of the cable utilizing an optical current sensor at one of a number of current frequencies, determining the current flow differential at that frequency, and analyzing the results of the current flow differential determination according to a corrosion test, a partial discharge analysis, a harmonic current analysis or a tangent delta diagnostic.
AU12544/00A 1998-11-23 1999-11-19 Method for diagnosing insulation degradation in underground cable Abandoned AU1254400A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US10954598P 1998-11-23 1998-11-23
US60109545 1998-11-23
PCT/CA1999/001098 WO2000031556A1 (en) 1998-11-23 1999-11-19 Method for diagnosing insulation degradation in underground cable

Publications (1)

Publication Number Publication Date
AU1254400A true AU1254400A (en) 2000-06-13

Family

ID=22328238

Family Applications (1)

Application Number Title Priority Date Filing Date
AU12544/00A Abandoned AU1254400A (en) 1998-11-23 1999-11-19 Method for diagnosing insulation degradation in underground cable

Country Status (9)

Country Link
US (1) US6617859B1 (en)
EP (1) EP1133701B1 (en)
JP (1) JP4566407B2 (en)
AT (1) ATE298427T1 (en)
AU (1) AU1254400A (en)
CA (1) CA2352142C (en)
DE (1) DE69925929T2 (en)
HK (1) HK1042945A1 (en)
WO (1) WO2000031556A1 (en)

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US6735441B1 (en) 1999-11-16 2004-05-11 Tekelec Methods and systems for providing mobile telecommunications network services in a routing node
GB0001923D0 (en) * 2000-01-27 2000-03-22 Bicc Gen Uk Cables Ltd Partial discharge detection test link,partial discharge detection system and methods for detecting partial discharge on a power cable
US7030621B2 (en) * 2004-05-04 2006-04-18 General Electric Company Low current AC partial discharge diagnostic system for wiring diagnostics
US7952360B2 (en) * 2007-03-14 2011-05-31 General Electric Company Method and system for passively detecting and locating wire harness defects
US8067945B2 (en) 2008-01-02 2011-11-29 At&T Intellectual Property I, L.P. Method and apparatus for monitoring a material medium
CN101750551B (en) * 2008-11-28 2012-03-21 英业达股份有限公司 Electro-discharge automatic test method and device
US9110117B2 (en) 2010-04-16 2015-08-18 Avo Multi-Amp Corporation System and method for detecting voltage dependence in insulation systems based on harmonic analysis
US8868360B2 (en) 2011-04-29 2014-10-21 General Electric Company System and device for detecting defects in underground cables
US20120299603A1 (en) * 2011-05-25 2012-11-29 Electric Power Research Institute, Inc. On-line monitoring system of insulation losses for underground power cables
US8847606B2 (en) * 2011-06-02 2014-09-30 University Of California Method and system for assessing insulation deterioration in live underground power cables
WO2013159284A1 (en) * 2012-04-24 2013-10-31 天津市电力公司 Aging test device of xlpe medium voltage cable water tree
US9733201B2 (en) * 2013-11-15 2017-08-15 Pentair Thermal Management Llc Thermal age tracking system and method
US11078577B2 (en) 2016-01-06 2021-08-03 Saudi Arabian Oil Company Fiber optics to monitor pipeline cathodic protection systems
EP3850380A1 (en) 2018-09-10 2021-07-21 3M Innovative Properties Company Electrical power cable monitoring device using low side electrode and earth ground separation
EP3850718A1 (en) 2018-09-10 2021-07-21 3M Innovative Properties Company Support structure for cable and cable accessory condition monitoring devices
WO2020055667A2 (en) * 2018-09-10 2020-03-19 3M Innovative Properties Company Electrical power cable monitoring device including partial discharge sensor
CN110057816A (en) * 2019-03-20 2019-07-26 天津大学 The appraisal procedure of insulating materials senile experiment device based on electro thermal coupling field
CN110057817A (en) * 2019-03-20 2019-07-26 天津大学 Insulating materials ageing tester based on electro thermal coupling field
US20230020865A1 (en) 2019-12-31 2023-01-19 3M Innovative Properties Company Local partial discharge monitoring
EP3961227A1 (en) 2020-08-31 2022-03-02 General Electric Company Online and offline partial discharge detection for electrical drive systems
CN112557840B (en) * 2020-11-24 2021-09-21 西南交通大学 XLPE cable insulation state evaluation method based on discharge energy difference
CN114184907B (en) * 2021-11-08 2022-08-05 西南交通大学 Rail transit cable aging degree evaluation method

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JPS58143275A (en) * 1982-02-19 1983-08-25 Nissin Electric Co Ltd Current transformer
JPS613075A (en) * 1984-06-18 1986-01-09 Sumitomo Electric Ind Ltd Troubled section discrimination for transmission line
JPH0786603B2 (en) * 1988-08-24 1995-09-20 松下電器産業株式会社 Optical sensor
JP2628738B2 (en) * 1989-02-01 1997-07-09 古河電気工業株式会社 Power cable test equipment
CA2008898C (en) * 1989-10-25 1998-11-24 Takeshi Endoh Method for detecting partial discharge in an insulation of an electric power apparatus
US5051577A (en) * 1990-03-20 1991-09-24 Minnesota Mining And Manufacturing Company Faraday effect current sensor having two polarizing fibers at an acute angle
JPH03295478A (en) * 1990-04-13 1991-12-26 Mitsubishi Electric Corp Fault point detector for electric power system
JP2577825B2 (en) * 1990-11-20 1997-02-05 三菱電機株式会社 Non-power failure insulation diagnostic device
EP0596879B1 (en) * 1991-08-01 1995-04-05 Siemens Aktiengesellschaft Process and arrangement for recognizing defects in power converters
JP2535292B2 (en) * 1992-10-23 1996-09-18 大電株式会社 A method for diagnosing deterioration of cable insulation performance.
JP3092772B2 (en) * 1993-12-01 2000-09-25 東京電力株式会社 Diagnosis method for insulation deterioration of power cable
JPH07193986A (en) * 1993-12-25 1995-07-28 Sumitomo Electric Ind Ltd Method for monitoring joint of power cable
JPH07260870A (en) * 1994-03-16 1995-10-13 Sumitomo Electric Ind Ltd Method for measuring dc leak current of power cable
JP2827964B2 (en) * 1994-07-05 1998-11-25 住友電気工業株式会社 Method and apparatus for diagnosing deterioration of insulation under hot wire
DE19519744A1 (en) * 1995-05-30 1996-12-05 Daetwyler Ag Test object insulation characteristics determn. method for esp. cable or cable system
US5736737A (en) * 1995-11-22 1998-04-07 Dawson; Jay W. Concatenated magneto-optic field sensors
JPH09243685A (en) * 1996-03-04 1997-09-19 Sumitomo Electric Ind Ltd Diagnostic apparatus for insulation degradation of hot-line cable
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JPH10253693A (en) * 1997-03-11 1998-09-25 Furukawa Electric Co Ltd:The Method for detecting insulator deterioration of rubber or plastic cable
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Also Published As

Publication number Publication date
US6617859B1 (en) 2003-09-09
EP1133701A1 (en) 2001-09-19
CA2352142A1 (en) 2000-06-02
EP1133701B1 (en) 2005-06-22
CA2352142C (en) 2009-05-26
DE69925929T2 (en) 2006-05-11
DE69925929D1 (en) 2005-07-28
JP4566407B2 (en) 2010-10-20
ATE298427T1 (en) 2005-07-15
WO2000031556A1 (en) 2000-06-02
JP2002530681A (en) 2002-09-17
HK1042945A1 (en) 2002-08-30

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Legal Events

Date Code Title Description
MK6 Application lapsed section 142(2)(f)/reg. 8.3(3) - pct applic. not entering national phase